body {
    background: linear-gradient(to right, #1db954, #191414);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #ffffff;
    min-height: 100vh;
    padding: 10px 0;
}

.container {
    background-color: rgba(25, 20, 20, 0.85);
    border-radius: 20px;
    box-shadow: 0px 0px 30px rgba(0, 0, 0, 0.5);
    max-width: 900px;
    margin-top: 10px;
    padding: 20px;
    backdrop-filter: blur(10px);
}

label, h2, h4, h5 {
    color: #1db954;
}

.form-control, .form-select {
    background-color: rgba(40, 40, 40, 0.7);
    border: 1px solid #535353;
    color: #ffffff;
}

.form-control:focus, .form-select:focus {
    background-color: rgba(50, 50, 50, 0.9);
    border-color: #1db954;
    box-shadow: 0 0 0 0.25rem rgba(29, 185, 84, 0.25);
    color: #ffffff;
}

.btn {
    border-radius: 20px;
    padding: 8px 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-success {
    background-color: #1db954;
}

.btn-primary {
    background-color: #1877f2;
}

.btn-danger {
    background-color: #e22134;
}

.btn-warning {
    background-color: #f5a623;
}

.btn-info {
    background-color: #1da1f2;
}

.btn-outline-light {
    border: 1px solid #b3b3b3;
    color: #ffffff;
}

#albumImage {
    border: 3px solid #1db954;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

#trackTitle {
    font-size: 1.5rem;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
}

#trackArtist {
    font-size: 1.1rem;
    color: #b3b3b3;
}

#messageArea {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 300px;
    display: none;
}